I’m lost. 😞

I need help. I’m in love with my bf. Like I’ve never felt this way before but he’s texting girls and I feel like he’s pulling away from me. I don’t know what to do. I love him. More than I’ve ever loved anyone. But I feel like this love is going to Kill me... I can’t leave him. I doubt he would really care but it would pull me apart. I know if I tell him that him texting other girls made me uncomfortable he would say ‘really’ or ‘are you serious right now’ or ‘you’re being to protective’ or childish or something like that. I already have really bad anxiety and he used to help. He used to be the only thing that helped me... Now I feel like he gives me more anxiety than almost anyone. It makes me really sad... I can’t take this anymore. But then he has these moments... Where I think that maybe.. just maybe he is who he used to be. Please help me... What do I do? 😪😢